From: "James Moritz" <j.r.moritz@herts.ac.uk>
Organization: University of Hertfordshire
To: rsgb_lf_group@blacksheep.org
Date: Mon, 11 Jun 2001 12:01:39 +0000
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Subject: LF: 73kHz
Message-ID: <E159PQw-0006cJ-00@gemini.herts.ac.uk>
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Dear John, Laurie, Mal & LF group,

I have not been active on 73kHz just lately because I am in the 
throes of completing a new PA for this band. However, this is now 
looking promising, and I hope to be QRV with it before the 
weekend, pyrotechnics permitting. Whether my antenna will stand it 
is another matter, of course...

The Rugby signal on 73.25kHz continues to be quite variable - I 
have lately seen it transmitting a single FSK 100Hz shift signal, and 
also a pair of 100Hz shift signals symetrically disposed around 
73.25, with a separation between their centre frequencies of 
150Hz or so - something worth bearing in mind when monitoring the 
band. The noise sidebands generated by this latter signal are very 
strong, so let's hope they don't do that too often! QRN has been 
strong during afternoon and night, but the mornings have been 
quiet. QRM seems to be at a lower level during the mornings too, 
so this remains probably the best time of day for a QSO.

Cheers, Jim Moritz
73 de M0BMU